English verb conjugation
CAN CONTUSE

Regular verb: contuse - contused - contused

Affirmation

Simple form	V-ing form
I can contuse you can contuse he can contuse we can contuse you can contuse they can contuse	I can be contusing you can be contusing he can be contusing we can be contusing you can be contusing they can be contusing
Perfect	V-ing perfect
I can have contused you can have contused he can have contused we can have contused you can have contused they can have contused	I can have been contusing you can have been contusing he can have been contusing we can have been contusing you can have been contusing they can have been contusing

Negation

Simple form	V-ing form
I can't contuse you can't contuse he can't contuse we can't contuse you can't contuse they can't contuse	I can't be contusing you can't be contusing he can't be contusing we can't be contusing you can't be contusing they can't be contusing
Perfect	V-ing perfect
I can't have contused you can't have contused he can't have contused we can't have contused you can't have contused they can't have contused	I can't have been contusing you can't have been contusing he can't have been contusing we can't have been contusing you can't have been contusing they can't have been contusing

Interrogative form

Simple form	V-ing form
can I contuse? can you contuse? can he contuse? can we contuse? can you contuse? can they contuse?	can I be contusing? can you be contusing? can he be contusing? can we be contusing? can you be contusing? can they be contusing?
Perfect	V-ing perfect
can I have contused? can you have contused? can he have contused? can we have contused? can you have contused? can they have contused?	can I have been contusing? can you have been contusing? can he have been contusing? can we have been contusing? can you have been contusing? can they have been contusing?

Interro-negative form

Simple form	V-ing form
can't I contuse? can't you contuse? can't he contuse? can't we contuse? can't you contuse? can't they contuse?	can't I be contusing? can't you be contusing? can't he be contusing? can't we be contusing? can't you be contusing? can't they be contusing?
Perfect	V-ing perfect
can't I have contused? can't you have contused? can't he have contused? can't we have contused? can't you have contused? can't they have contused?	can't I have been contusing? can't you have been contusing? can't he have been contusing? can't we have been contusing? can't you have been contusing? can't they have been contusing?